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ARTCC controller at ZAU, working 2 departures with different rates of climb, allows the faster climbing aircraft to overtake the slower aircraft.
| Attributes | |
| ACN | 478393 |
| Time | |
| Date | 200007 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sbn.airport |
| State Reference | MI |
| Altitude | msl bound lower : 24000 msl bound upper : 25000 |
| Environment | |
| Weather Elements | Turbulence Rain |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air taxi |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise : enroute altitude change |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller limited radar : 1 controller non radar : 4 controller radar : 7 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance |
| Miss Distance | horizontal : 29400 vertical : 700 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X climbing from grr-stl to FL310. The other aircraft climbing mke to fwa. Stopped mke aircraft Y at FL240. Was attempting to get the grr departure on top. The aircraft climbed slowly and turns were issued to both aircraft. Aircraft passed at 700 ft and 4 mi.
Original NASA ASRS Text
Title: ARTCC CTLR AT ZAU, WORKING 2 DEPS WITH DIFFERENT RATES OF CLB, ALLOWS THE FASTER CLBING ACFT TO OVERTAKE THE SLOWER ACFT.
Narrative: ACFT X CLBING FROM GRR-STL TO FL310. THE OTHER ACFT CLBING MKE TO FWA. STOPPED MKE ACFT Y AT FL240. WAS ATTEMPTING TO GET THE GRR DEP ON TOP. THE ACFT CLBED SLOWLY AND TURNS WERE ISSUED TO BOTH ACFT. ACFT PASSED AT 700 FT AND 4 MI.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.